lispdoc - results for constantp
(constantp form &optional (environment nil envp))
|Function: True of any FORM that has a constant value: self-evaluating objects, keywords, defined constants, quote forms. Additionally the constant-foldability of some function calls special forms is recognized. If ENVIRONMENT is provided the FORM is first macroexpanded in it.
CLtL2 - 10.3. Creating Symbols
CLtL2 - 20.1. Run-Time Evaluation of Forms
HyperSpec - Function CONSTANTP
|By Bill Moorier|